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References: [ +from:tzitzikas_ee@yahoo.com: 11 ]

Total 11 documents matching your query.

1. Topband: antenna coupler help for medium waves? (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Sun, 18 Oct 2009 05:06:37 -0700 (PDT); we have a university official legal radio station. the transmitter is about about 250watt with 50 ohm output at 1431khz medium wave band. my antenna is an inverted-L antenna with (5/16)*wavelenght to; /archives//html/Topband/2009-10/msg00193.html (8,653 bytes)
2. Topband: inverted L antenna match system (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Fri, 28 May 2010 11:22:16 -0700 (PDT); Hi. I have a 500w linear amplifier at 160m band. The output is 50ohm. My antenna is an inverted L with lenght = [5*(wave lenght)]/16. I read at ARRL handbook that a variable series capacitor 0-1000pf; /archives//html/Topband/2010-05/msg00062.html (6,913 bytes)
3. Re: Topband: inverted L antenna match system (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Mon, 31 May 2010 05:00:32 -0700 (PDT); thank you all of you for your answers. So more radials, means lower swr? Do you think that the variable capacitor is all i need for low swr? If i will not achieve swr<1.5 what do you think about to t; /archives//html/Topband/2010-05/msg00069.html (11,309 bytes)
4. Topband: protect my transmitter from atmospheric discharges (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Mon, 31 May 2010 09:57:59 -0700 (PDT); Hi. I have an transmitter at 160m band (500w). i know that when the weather is bad, the antenna's wire (inverted L) has a voltage about several kvolts. I would like to protect my transmitter. I am th; /archives//html/Topband/2010-05/msg00072.html (6,971 bytes)
5. Re: Topband: inverted L antenna match system (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Thu, 3 Jun 2010 07:22:18 -0700 (PDT); Hi, and thank you for your interest post. In my case is difficult to install so many radials. You can see a drawing about my transmitter area here: http://tzitzikas.webs.com/transmitter_area.JPG the; /archives//html/Topband/2010-06/msg00015.html (10,690 bytes)
6. Topband: swr protection schematic 160m? (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Sun, 6 Jun 2010 00:54:28 -0700 (PDT); I would like to ask you if you have a schematic/idea for swr protection, which will cut off the voltage (under high swr) by using a relay. i would like to put a relative circuit after output stage to; /archives//html/Topband/2010-06/msg00024.html (6,607 bytes)
7. Topband: inverted-L antenna 1/4 vs 5/16 (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Fri, 24 Sep 2010 02:16:43 -0700 (PDT); hi. I have install an inverted-L antenna 5/16. I am thinking to change it with an 1/4 inverted-L. I am concerning for local strong signal. What do you think, i will see big difference or with an 1/4; /archives//html/Topband/2010-09/msg00073.html (6,711 bytes)
8. Topband: matching 5/16 inverted-L question (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Fri, 24 Sep 2010 10:35:04 -0700 (PDT); Hi, i have an 5/16 inverted-L nad for matching with my 50ohm transmitter i am using just a series variable capacitor 0-500pf. I am using 1 meter coaxial 50ohm cable to connect the transmitter with th; /archives//html/Topband/2010-09/msg00080.html (7,862 bytes)
9. Topband: high SWR problem with RG214 (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Thu, 21 Oct 2010 09:26:39 -0700 (PDT); Hi. I have a transmitter 500w. I was operating my transmitter with low SWR (250w FWD power and 0,5w RFL power). The antenna's match system is only a series variable capacitor 0-500pf. With this varia; /archives//html/Topband/2010-10/msg00106.html (7,722 bytes)
10. Re: Topband: high SWR problem with RG214 (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Fri, 22 Oct 2010 06:21:02 -0700 (PDT); hi and thank you for your answers. if i put a capacitor 180pf, i will have 180pf before the variable capacitor and 180pf after the variable capacitor. it is ok? Look a schematic about my connection b; /archives//html/Topband/2010-10/msg00115.html (9,710 bytes)
11. Topband: meters of RG214 i can use (score: 1): Author: sasas asasas <tzitzikas_ee@yahoo.com>; Date: Mon, 25 Oct 2010 06:27:18 -0700 (PDT); Hi. I have a transmitter and i want to move the antenna to another place. I am thinking to use about 50meters coax cable RG214. Except for the attenuation i will have, there is any other problem? Pro; /archives//html/Topband/2010-10/msg00121.html (6,580 bytes)

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